Add support of --folder paramter for cron.
Before this changes crontab from directories (except native applications) was ignored
Delete git

unneeded file
fix cron hang on Ctrl+C terminating from terminal
Terminate subprocesses right way on cronstop
Merge branch 'master' of https://github.com/jmistx/web2py
Merge pull request #446 from jmistx/master

Add support of --folder paramter for cron.